Bernhard remmers



(No Model.)

, B. REMMERS.

FILTER P11388- Patented May 13, 1890.

Attorney W Inventor Withesses; (l

UNITED STATES PATENT OFFICE.

BERNHARD REMMER-S, OF NEW ORLEANS, LOUISIANA, ASSIGNOR TO THE NILES TOOLWORKS, OF HAMILTON, OHIO.

FILTER-PRESS.

SPECIFICATION forming part of Letters Patent No. 427,794, dated May 13,1890.

Application filed June 15, 1839- Serial No. 814,461. (No model.)

.To all whom it may concern.-

Be it known that I, BERNHARD REMMERs, a citizen of the United States ofAmerica, and a resident of New Orleans, parish of Orleans,

Louisiana, have invented certain new and use ful Improvements inFilter-Presses, of which the following is a specification.

This invention pertains to that common olassof filter-presses in which aseries of filxo ter-cells is formed by clamping together a series ofplates having recessed faces, each pair of contiguous plates thusforming a filteringcell between them, cloths clamped between the platesforming filtering-linings for these cells, openings through the webs ofthe plates and through the cloths forming acontinuous admission-channelto all of the cells, the cloths at each side of each cell-wall beingclamped thereto around the admission-opening to prevent leakage.

My present invention relates particularly to the device for securing thecloths at the webs of the plates around the admission-openlugs.

2 5 My improvements will be readily understood from the followingdescription, taken in connection with the accompanying draw ings, inwhich-- Figure 1 is a face view of the central portion of an ordinaryfilteuplate minus the cloth,

sheet-metal backing, and cloth fastening; Fig.

2, a similar view with the cloth, sheet metal,

and cloth fastening in place, the cloth and sheet metal being brokenaway in places to 3 5 indicate more clearly the arrangement of theseparts, which, however, is precisely as usual; Fig. 3, a substantiallyvertical section in the plane of line a through the plate of Fig.

2, with its attachments there shown and Fig.

4:, a similar section, half elevation, of the cloth fastening alone.Figs. 3 and a are upon a somewhat larger scale than Figs. 1 and 2.

In the drawings, A indicates the usual ribbed web of an ordinaryfilter-plate for use in filtor-presses of the class above indicated; B,

the usual hole through the web of the plate to permit of the passage ofthe material to the filtering-cells which will be formed between theplates, this hole having a non-circular form,being shown as hexagonal;O, the

facial margins around that hole against which the margins of the holesin the cloths are to be clamped; D, the usual perforated sheet metaldisposed against the ribbed faces of the plate to prevent the cloth.from being forced 5 5 in between the ribs; E, the usual cloths lyingagainst the sheet metal and having holes co= inciding in position withthe hole in the plate, the margins of the holes in the cloths beingclamped liquid-tight to the facial margins of thehole inthe plate; F,thebusliiligfiangeseating against the cloth and pressing the same to one ofthe facial margins of the hole in the plate, this bushing-flange havinga large central opening through it; G,a non-cireularhub 6 5 formed uponand projecting from the inner face of this bushing-flange, this hubprojecting into and engaging the non-circular hole in the plate; H, amuch similar bushing-flange, similarly provided with a non-circular hub,this second bushing-flange, however, being bored to form a bearing for acollared bushing-screw; J, an outwardly-facing annular bearing in thesecond bushing-flange to be engaged by the collar of a bushing-screw andK, a bushing-screw provided with a collar, this bushing-scrcw having abearing within the bore of the bushing-flange H and having a bearingwith its collar against the face J, the bushing-screw engaging thebushing-flange F by a thread and having a non-circular bore, by means ofwhich it may be turned by a plugwrench.

Heretofore, so far as I know, all cloth fastenings of the screwflangetype for filterpresses have possessed the very serious fault of twistingor wrinkling either one or both of the cloths when they were forciblyscrewed up. This fault is entirely remedied in my construction. The twobushing-flanges, being 0 put in place, hold the cloth neatly, and theirnon-circular hubs, engaging the hole in the plate, prevent theirrotation under any eir-' cu mstances, the bushing-screw being the onlyrotary element and its turning having no twist- 5 ing effect upon thecloths. The system also yields a large clear opening from cell to cell.The non-circular feature of the hole through the bushing-screw is asatisfactory expedient for enabling the bushing-screw to be forcibly I00turned; but it is obvious that other means than a plug-wrench may beemployed for turnin g the bushing-screwas, for instance, a suitableimplement for grasping or engaging the collar of the bushing-screw.

I claim as my invention 1. In a filter-press, the combination,substantially as set forth, of a bored bushingflange, a threadedbushing-flange, and a collared bushing-screw engaging saidbushingflanges and having an opening through it.

2. In a filter-press, the combination, substantially as set forth, of abored bushingflange having a non-circular hub adapted to engage anon-circular hole in the plate of the press, a threaded bushing-flangehaving a similar hub, and a collared bushing-screw en- I 5 gaging saidbushing-flanges and having an opening through it.

BERNHARD REMMERS. Witnesses:

W. E. DODSWORTH, J. '1. EXNIoIos.

